:root {
    --font-family-title: 'Bruno Ace SC', cursive;
    --font-family-body: 'Asap', sans-serif;
    --color-principal: #ff9100;
    --color-background: #2b2929;
    --color-light: #f0f1fa;
}

html {
    max-width: 1400px;
    min-width: 350px;
}

header {
    text-align: center;
    height: 12.5vh;
    width: 100%;
    padding-top: 2%;
    background-color: var(--color-background);
}

.titulo-header {
    font-family: var(--font-family-title);
    font-size: 3em;
    font-weight: bold;
    color: var(--color-principal);
    text-shadow: 0px 0px 7px rgba(255, 145, 0, 0.75); /*equivale a #ff9100*/
}

main {
    font-family: var(--font-family-body);
    height: 120vh;
    width: 100%;
    padding: 5vh 0;
    text-align: center;
    background-image: url(../img/fondo-programa.jpg);
    background-size: cover;
}

    section {
        /* margin-top: 5vh; */
        /* padding: 1vh 1vw; */
        width: auto;
    }
    
        .registro {
            display: block;
            text-align: center;
            margin: 0 auto;
            width: 40vw;
            border: var(--color-background);
            border-radius: 10px;
            padding: 5vh 3vw;
            background-color: var(--color-light);
        }
            .registro-titulo {
                display: block;
                font-size: 2.5em;
                font-weight: bold;
                color: gray;
                margin-top: 0;
            }
            .registro-subtitulo {
                display: block;
                font-size: 1.5em;
                color: gray;
                margin: 2% auto;
            }
            .registro-label {
                display: block;
                width: 100%;
                font-size: 1.25em;
                color: #3b3a3a;
                margin: 2.5vh auto;
            }
                .registro-label > label {
                    color: gray;
                    float: left;
                    font-weight: bold;
                }
                .registro-input {
                    width: 95%;
                    /* height: 2vh; */
                    margin: 1.5vh auto;
                    padding: 10px 2.5%;
                    border: 1px solid #ccc;
                    border-radius: 5px;
                }
                .registro-select {
                    width: 100.7%;
                    /* height: 6vh; */
                    margin: 1.5vh auto;
                    padding: 10px 2.5%;
                    border: 1px solid #ccc;
                    border-radius: 5px;
                }
                    .registro-select option[value=""] {
                        color: gray;
                    }

            .registro div:last-of-type {
                margin: 5vh auto;
            }

            .btn-enviar {
                display: block;
                width: 101.5%;
                border: none;
                border-radius: 3px;
                background-color: #37be60;
                color: #fff;
                font-weight: bold;
                padding: 2vh 0;
                margin: 2vh auto;
            }

footer {
    text-align: center;
    height: 17.5vh;
    width: 100%;
    background-color: #2b2929;
}
    .footer-p {
        font-family: var(--font-family-body);
        color: #fff;
        padding-bottom: 0.35%;
    }
    footer .footer-p:first-child {
        padding-top: 2%;
    }
    footer p > a {
        text-decoration: none;
        color: #ffffff;
    }
    footer p > a > img {
        width: 15px;
    }